I want to train a Grass pokemon... but in Heartgold, the only one available until Goldenrod is like Hoppip... Is it worthy? Is Jumpluff worthy?

not really, speed is its only impressive stat and you have to deal with Hoppip being shitty until you can get the TM for Headbutt, so you pretty much are waiting until Goldenrod anyway. isn't Bellsprout another early pokemon in that game, you could eventually have Victreebel. Bellossom is also an option, Oddishes are in Ilex forest and you can get the Sun Stone shortly after that -- Sunflora's good too, also evolves by sun stone, Sunkern is in the National Park north of Goldenrod

I like Lapras a lot more since it's a great tank, but I've never tried out a Tentacruel before anyway.

Tentacruel's defense isn't that great but its Special Defense is super high, plus it learns Acid Armor/Barrier if you need to brace for strong physical attacks. What really intrigues me about Tentacruel is, if i train a Corsola to level 37 and then breed it with a Tentacool, it'll be born knowing Mirror Coat. Imagine a Tentacruel that could take a Thunderbolt, lose maybe half of its HP, but then turn it back around on the electric pokemon twice as hard and knock it out in one hit.

not really, speed is its only impressive stat and you have to deal with Hoppip being shitty until you can get the TM for Headbutt, so you pretty much are waiting until Goldenrod anyway. isn't Bellsprout another early pokemon in that game, you could eventually have Victreebel. Bellossom is also an option, Oddishes are in Ilex forest and you can get the Sun Stone shortly after that -- Sunflora's good too, also evolves by sun stone, Sunkern is in the National Park north of Goldenrod

Yeah, also that 4x Weakness to Ice is no good... I'm in Goldenrod at the moment, but yeah, nothing convinces me very much. Maybe a fire could be interesting, maybe growlithe... i don't know, i'm choosing to be more varied this time, already choosed Totodile as the starter, training a Gastly... etc...

Yeah, also that 4x Weakness to Ice is no good... I'm in Goldenrod at the moment, but yeah, nothing convinces me very much. Maybe a fire could be interesting, maybe growlithe... i don't know, i'm choosing to be more varied this time, already choosed Totodile as the starter, training a Gastly... etc...

Growlithe's cool if you can get a Fire Stone before late in the game, but if not, completely worthless.

train it at least until it learns Flame Wheel before evolving it though, you'll regret not having a good fire move if not